A 2.00 L solution contains 0.545 M NH3 and 0.641 M NH4A.  (The Kb of NH3 is 1.86⋅10−51.86⋅10-5). What is the pH of this solution?   What is the pH of this solution after 0.121 mol of HCl are added to the solution?   What is the pH of this solution after 0.242 mol of HCl are added to the solution?

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter13: Acids And Bases
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Problem 29QAP: How many grams of HI should be added to 265 mL of 0.215 M HCI so that the resulting solution has a...
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A 2.00 L solution contains 0.545 M NH3 and 0.641 M NH4A.  (The Kb of NH3 is 1.86⋅10−51.86⋅10-5).

What is the pH of this solution?  
What is the pH of this solution after 0.121 mol of HCl are added to the solution?  
What is the pH of this solution after 0.242 mol of HCl are added to the solution?  

 

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